The 2026 Cook County Board of Commissioners election will see all seventeen seats of the Cook County Board of Commissioners up for election to four-year terms. The election coinsides with other 2026 Cook County, Illinois, elections (including an election for the president of the Board of Commissioners) with the primary elections to be held on March 17, 2026 and the general election to be held on November 3, 2026.
The Republican Party is running candidates in only 5 of the 19 Board of Commissioners districts. Sean Morrison, the board's only Republican member, is not seeking re-election.
Incumbent 1st district commissioner Tara Stamps, a Democrat who was first appointed in 2023, is seeking re-election to a second full term.
The incumbent 2nd district commissioner Michael Scott Jr., a Democrat who was first appointed in 2024, is seeking re-election to a second full term.
Incumbent 3rd district commissioner Bill Lowry, a Democrat, is running for re-election. No candidate filed to run against him in the Democratic primary, while no candidate filed for the Republican primary, meaning he will be unopposed in the general election.
The incumbent 4th district commissioner Stanley Moore, a Democrat, is seeking re-election to a fourth full term.
The incumbent 5th district commissioner Kisha McCaskill, a Democrat who was first appointed in 2025, is seeking re-election to her first full term.
Incumbent 6th district commissioner Donna Miller, a Democrat, is retiring to run for Congress.
Incumbent 7th district commissioner Alma Anaya, a Democrat, is running for re-election to a third term.
Incumbent 8th district commissioner Jessica Vasquez, a Democrat who was first appointed in 2025, is seeking re-election to her first full term.
Incumbent 9th district commissioner Maggie Trevor, a Democrat, is running for re-election to a third term.
Incumbent 10th district commissioner Bridget Gainer, a Democrat, is seeking re-election to a fourth full term.
Incumbent 11th district commissioner John Daley, a Democrat, is running for re-election to an eighth full term.
Incumbent 12th district commissioner Bridget Degnen, a Democrat is retiring.
Incumbent 13th district commissioner Josina Morita, a Democrat, is running for re-election to a second term.
Incumbent 14th district commissioner Scott Britton, a Democrat, is running for re-election to a third term.
Incumbent 15th district commissioner Kevin Morrison, a Democrat, is retiring to run for Congress.
Incumbent 16th district commissioner Frank Aguilar, a Democrat, is running for a second full term.
Incumbent 17th district commissioner Sean Morrison, a Republican, is retiring.